Rohm Gmbh

Rohm Gmbh Chemische Fabrik

Bayer Aktiengesellschaft

Manfred Munzer

Werner Siol

Heinz Vetter

Jens-Dieter Fischer

Franz Wenzel

Winfried Wunderlich

Ralf Liebler

Karl A Jung

Gerhard Balle

Peter J Arndt

Peter Quis

Siegmund Besecke

Wilhelm Elser

Petrus E Legierse

Thomas Rhein

Wilhelm Wopker

Wilhelm Slawyk

Walter Ludwig

Felix Schinzel

Peter Buergle

Karl Maurer

Ursula Golchert

Wilhelm Rosskopp

Adolf Wohnhas, Deceased

Karl-Heinz Jakob

Jurgen Hennig

Multilayered plastic objects are prepared having a core layer of an aromatic polycarbonate in contact with a polymethacrylate film containing a UV absorber. The polymethacrylate film comprises a copolymer of methylmethacrylate and an acrylic or methacrylic ester, (meth)acrylamide, maleimide or mixtures thereof and is compatible with said aromatic polycarbonate at all mixing ratios.

Methacrylate protective coating containing a UV-absorber for

An impact resistance modifier for polycarbonate, which is a copolymer, comprising an elastomer and a methyl methacrylate copolymer, which are bonded covalently. The methyl methacrylate copolymer is one that is compatible by itself with polycarbonate resin due to specific comonomers. Such comonomers are aromatic (meth)acrylic esters and (meth)acrylamides, cycloalkyl(meth)acrylamides and cycloalkylmaleimides. Thermoplastic molding compounds comprising polycarbonate and the new impact resistance modifier exhibit excellent impact resistance.

Impact resistance modifier for polycarbonate

The invention relates to opaque synthetic resins containing 1 to 30% by weight of cross-linked beads consisting of a polymer comprised of:

Opaque synthetic resins

Transparent, thermoplastically processible polymer mixtures comprised of:

Compatible mixtures of a polycarbonate and a methacrylate copolymer

A method for wet metallizing articles made, or having a surface to be metallized, of an acrylic polymer containing at least 0.01 percent of acrylamide, methacrylamide, or of an acrylate ester or amide of an alkanol or alkyl amine have a terminal basic nitrogen group, e.g., an amino, substituted amino, or basic nitrogen heterocyclic group.

Wet metallization of acrylic resin articles

Flame retardant molding compounds comprising polymers of methyl methacrylate having an average molecular weight between 1.times.10.sup.5 and 2.times.10.sup.5, which molding compounds contain from 8 to 15 weight percent of at least one chloroalkylphosphoric acid ester of the formula ##STR1## wherein R.sub.1 is alkyl or ##STR2## and R.sub.2 is hydrogen, methyl, ethyl, or chloro-substituted methyl or ethyl.

Flame retardant polymethyl methacrylate molding compound

A method for making multilayered synthetic resin bodies by the coextrusion of thermoplastic molding compounds wherein at least one of the layers in the extruded body is to be protected against UV light, which comprises extruding at least one layer from a thermoplastic molding compound that is formed entirely or predominantly of a copolymer formed between monomers comprising in their molecules groups or structures which, because of their characteristic absorption of ultraviolet light, provide protection against ultraviolet light, together with other, known, monomers.

Method for making multilayered resin bodies having UV-protection and the

A method for making impact resistant molding compositions wherein a hard phase having a glass transition temperature above 25.degree. C. and consisting principally of methyl methacrylate is polymerized at least partially in a first stage, following which the monomers of a rubbery phase whose polymers have a glass transition temperature below 25.degree. C. are added in a second stage and the polymerization is carried to completion, polymerization of the hard phase in the first stage being performed in a presence of an oil soluble free radical initiator and of an organosulfur chain transfer agent having at least two thiol groups in the molecule, and polymerization of the monomers of the rubbery phase in the second stage being carried out with graft crosslinkers in the presence of the previously formed hard phase.

Method for making impact resistant molding compositions

A process of making radically polymerizable compositions suitable for the production of impact resistant optically clear glass like plastic and forming the glass from such compositions is disclosed. Also taught are the polymerizable compositions and the final glass produced. An isocyanate terminated prepolymer based upon a polyol selected from polyesters, polyester amides, polycarbonates and polyacetals and diisocyanates selected from branched aliphatic isocyanates, cycloaliphatic isocyanates and aliphatic or cycloaliphatic isocyanates graft polymerized with vinyl monomers is chain extended with aliphatic or cyloaliphatic diamines while in solution in vinyl monomers consisting mainly of methacrylic acid esters. The chain extension is carried out with a deficit of amine and preferably to a viscosity at 20% solids in the vinyl monomers of between 200 and 30,000 cP at 20.degree. C. The composition is then radically polymerized to form the high impact glass like plastic alloy.

High-impact polymer alloys

A printing ink or varnish having a binder comprising isopropylmethacrylate and hydrophilic comonomers, particularly unsaturated carboxylic acids, their hydroxyalkyl esters, or a mixture thereof; preferably in combination with cellulose esters such as nitrocellulose, as an additional binder. The ink or varnish also contains dissolved or undissolved dyes, as well as a lower alkyl alcohol solvent. The printing and coatings thus produced are characterized by hardness and a high sealing stability.

Alcohol-soluble printing ink or varnish

What is disclosed are a method for making a transparent impact-resistant polymer comprising a rubbery phase of grafted polybutadiene and a hard copolymer phase, which polymer is adaptable to use as a molding material, which method comprises:

Making impact resistant polymers

What is disclosed is a method for the partial polymerization of at least one vinyl monomer to form a mixture of said monomer with a polymer thereof, which comprises initiating polymerization of said monomer with a percarbonic acid ester and inhibiting further polymerization when the desired mixture is formed by addition thereto of a thioether, an organic disulfide, or a mercaptan, as are the partially-polymerized mixtures so produced, and their use for forming an organic glass by further polymerization thereof.

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Bensheim, Germany

Manfred Munzer